United Plankton Charitable Trust

LOS ANGELES, CA EIN: 20-6582607

United Plankton Charitable Trust is a private charitable foundation established to support philanthropic initiatives. The organization operates as a charitable trust focused on making grants to qualified nonprofit organizations.

Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$8.3M

-5.2% YoY

Annual Giving

$3.4M

+249.7% YoY

Grant Count

17

+6.3% YoY

Avg Grant Size

$197K

+229.2% YoY

Under IRS private-foundation payout rules, United Plankton Charitable Trust reported a distributable amount of $442K for 2024 — the minimum it must pay out in qualifying distributions.

Research compiled by Grantable AI from public sources. Last updated April 2026.

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

4states

Cities

ArcataAustinCarsonDallasIrvineIslesfordLos AngelesMalibuNew YorkPasadenaSan MarinoSanta AnaSanta MonicaValenciaWest Hollywood

Financial History

Multi-year comparison from IRS filings

Revenue
Expenses
Qualifying Distributions
Net Investment Income
$0$940K$2M$3M$4M20202021202220232024
Metric202420232022
Total Assets$8,349,298$8,811,019$5,838,623
Revenue$2,557,678$3,294,506$274,567
Expenses$3,417,239$1,000,002$896,669
Qualifying Distributions$3,352,000$958,400$858,074
Net Investment Income$497,299$257,305$235,972
Distributable Amount$442,415$8,404$325,352

Giving Over Time

Total grant dollars and number of grants per year

$0$838K$2M$3M$3M18 grants202014 grants202116 grants202216 grants202317 grants2024

Grant Insights

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2024

CALIFORNIA INSTITUTE OF …$1.0MHAMMER MUSEUM LOS ANGELES$615KCAL POLY HUMBOLDT FOUNDA…$345KTHE MUSEUM OF CONTEMPORA…$315KINSTITUTE OF CONTEMPORAR…$250KPERFORMANCE ART MUSEUM$200KLOS ANGELES PHILHARMONIC…$150KPASADENA CONSERVATORY OF…$120KHEART OF THE BRAIN$100KPLANNED PARENTHOOD FEDER…$100K

Grant Size Distribution

81 grants across all recorded years

44<$50K15$50–100K16$100–250K4$250–500K1$500K–1M1$1–5M$5M+

Giving History

Grant recipients and amounts by year

Among its reported 2024 grants, the largest include California Institute of the Arts ($1,000,000), Hammer Museum Los Angeles ($615,000), Cal Poly Humboldt Foundation ($345,000).

RecipientPurposeAmount
AMERICAN FRIENDS OF THE NATIONAL GALLERY TO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$5,000
CAL POLY HUMBOLDT FOUNDATION ARCATA, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$345,000
CALIFORNIA INSTITUTE OF THE ARTS VALENCIA, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.TO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.TO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$1,000,000
HAMMER MUSEUM LOS ANGELES LOS ANGELES, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$615,000
HEART OF THE BRAIN LOS ANGELES, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$100,000
INSTITUTE OF CONTEMPORARY ART LOS ANGELES, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$250,000
LACE LOS ANGELES, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$50,000
LAXART WEST HOLLYWOOD, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$25,000
LCYC COMMUNITY SAILING FOUNDATION ISLESFORD, METO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$5,000
LOS ANGELES PHILHARMONIC ASSOCIATION LOS ANGELES, CATO FURTHER ORGANIZATION'S CHARITABLE PURPOSE.$150,000

Leadership & Key People

Officers and directors from IRS filings

Compensation Overview

From 2024 IRS filing

From 2024 filing

NameTitleHoursCompensation
KAREN HILLENBURGTRUSTEE1

Recent News & Activity

Recent developments and announcements

The trust has provided grant support to marine ecological research initiatives, including funding for major marine survey projects that advance scientific understanding of ocean ecosystems.

Grant received to support the largest marine ecological survey in the world

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**Note:** The available verified sources contain limited information about United Plankton Charitable Trust's specific operations, grantmaking practices, financial details, leadership structure, and funding priorities. A comprehensive funder profile would require additional verified documentation such as the organization's Form 990-PF filings, official website, or published grant guidelines.

Subject Areas

Focus areas based on grantmaking activity

Frequently Asked Questions

What size grants does United Plankton Charitable Trust award?

In 2024, United Plankton Charitable Trust awarded 17 grants totaling $3.4M — an average of about $197K per grant, based on its IRS Form 990 filings.

How much is United Plankton Charitable Trust required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2024, United Plankton Charitable Trust reported a distributable amount of $442K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is United Plankton Charitable Trust's EIN?

United Plankton Charitable Trust's EIN (Employer Identification Number) is 20-6582607. IRS Form 990 filing data is available on this page for 2020–2024.

Explore Open Grants

Browse active grant opportunities in United Plankton Charitable Trust's focus areas in our free grants database

Related Funders

Similar funders by location and focus area

Data last updated June 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.

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